율무밭에 발생하는 잡초 양상

The Occurrence of Weed Species in Coix lacryma-jobi var. mayuen Fields

  • ABSTRACT

    율무밭에 발생하는 잡초발생양상과 잡초로 인한 피해정도를 파악하여 율무밭 잡초방제의 기초자료로 활용하기 위하여 2013년 5월부터 9월까지 3회 조사하였다. 율무밭에 발생하는 잡초는 33과 98종으로 일년생잡초가 58종(59.2%), 월년생잡초 21종(21.4%) 그리고 다년생잡초가 19종(19.4%)이었다. 이 중 외래잡초는 31종이나 덩굴성 외래잡초인 둥근잎유홍초, 미국나팔꽃, 둥근잎나팔꽃 등의 발생이 많았다. 우점도가 높은 잡초로는 바랭이, 깨풀, 돌피, 쇠비름, 미국가막사리 등이었으며, PCA 분석한 결과, 3개 그룹(미국개기장 군락, 돌피-털진득찰 군락, 깨풀 군락)으로 나눌 수 있었다. 잡초방임구에서 율무의 수량감소는 잡초관리구에 비하여 60% 감소하였다.


    This study was conducted in order to utilize the basic data for weed control by surveying the occurrence of weed species and the degree of damages caused by those weeds occurred in cultivated Coix lacryma-jobi var. mayuen fields. Survey was carried out three times, from June to September in 2013. The weed flora was composed of a total of 98 weeds, 33 family, of which 58 species were annual, 21 species were biennial, and 19 were perennial plants. Thirty-one exotic species were included as well. Dominance was the highest with Digitaria ciliaris followed by Acalypha australis, Echinochloa crus-galli, Portulaca oleracea, Bidens frondosa etc. in order. In the PCA plot analysis, weeds occurred in C. lacryma-jobi var. mayuen fields were divided into three groups, Panicum dichotomitlorum community, Echinochloa crus-galli-Sigesbeckia pubescens community and Acalypha australis community. Yield of C. lacryma-jobi var. mayuen was reduced 60% in no weeding plots comparing to that in weed management plots.

  • KEYWORD

    율무 , 잡초 , 피해 , PCA 분석

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  • [Table 1.] Braun-Branquet scale by cover-abundance (Braun-Branquet, 1964).
    Braun-Branquet scale by cover-abundance (Braun-Branquet, 1964).
  • [Fig. 1.] Braun-Branquet scale by cover-abundance with figure (Braun-Branquet, 1964). 5: ranger of cover 76~100%, 4: ranger of cover 51~75%; 3: ranger of cover 26~50%; 2: ranger of cover 6~25%; 1: ranger of cover < 5% (numerous individuals); +: ranger of cover < 5% (few individuals); r: very fewer individuals
    Braun-Branquet scale by cover-abundance with figure (Braun-Branquet, 1964). 5: ranger of cover 76~100%, 4: ranger of cover 51~75%; 3: ranger of cover 26~50%; 2: ranger of cover 6~25%; 1: ranger of cover < 5% (numerous individuals); +: ranger of cover < 5% (few individuals); r: very fewer individuals
  • [Table 2.] Occurrence of weed flora in Coix lacryma-jobi var. mayuen fields.
    Occurrence of weed flora in Coix lacryma-jobi var. mayuen fields.
  • [Fig. 2.] Classification of occurred weeds in Coix lacryma-jobi var. mayuen fields by life cycle.
    Classification of occurred weeds in Coix lacryma-jobi var. mayuen fields by life cycle.
  • [Fig. 3.] Ratio of occurred weeds in Coix lacryma-jobi var. mayuen fields by families.
    Ratio of occurred weeds in Coix lacryma-jobi var. mayuen fields by families.
  • [Table 3.] Occurrence of weed flora ordered by importance value in Coix lacryma-jobi var. mayuen fields (top 10 weeds).
    Occurrence of weed flora ordered by importance value in Coix lacryma-jobi var. mayuen fields (top 10 weeds).
  • [Fig. 4.] Result of PCA plot covariance in Coix lacryma-jobi var. mayuen fields. PANDI: Panicum dichotomiflorm; ECHCG: Echinochloa crus-galli; SIEPU: Siegesbeckia pubescens; CENMI: Centipeda minima, DIGSP: Digitaria ciliaris; AMALI: Amaranthus lividus; SETVI: Setaria viridis, SOLNI: Solanum nigrum; ECHSP: Echinochloa spp.; ACAAU: Acalypha australis.
    Result of PCA plot covariance in Coix lacryma-jobi var. mayuen fields. PANDI: Panicum dichotomiflorm; ECHCG: Echinochloa crus-galli; SIEPU: Siegesbeckia pubescens; CENMI: Centipeda minima, DIGSP: Digitaria ciliaris; AMALI: Amaranthus lividus; SETVI: Setaria viridis, SOLNI: Solanum nigrum; ECHSP: Echinochloa spp.; ACAAU: Acalypha australis.
  • [Fig. 5.] Result of PCA plot correlation in Coix lacryma-jobi var. mayuen fields. PANDI: Panicum dichotomiflorm, SIEPU: Siegesbeckia pubescens; OENJA: Oenanthe javanica; IPOHE: Ipomoea hederaceae; COMCO: Commelina communis; LIDPY: Lindernia procumbens; LYCLU: Lycopus lucidus; BIDFR: Bidens frondosa; SETFA: Setaria faberi; STEAQ: Stellaria aquatic; AMBTR: Ambrosia trifida; IPOCC: Ipomoea coccinea; GLYSO: Glycine soja; ERIAN: Erigeron annuus; PERHY: Persicaria hydropiper; EQUAR: Equisetum arvense; CENMI: Centipeda minima; DIGSP: Digitaria ciliaris; CHEAC: Chenopodium album var. centrorubrum; ALOAA: Alopecurus aequalis var. amurensis; ACAAU: Acalypha australis; CAPBP: Capsella bursapastoris; VERAR: Veronica arvensis; POROL: Portulaca oleracea; ECHSP: Echinochloa spp.; SOLNI: Solanum nigrum; CHESE: Chnopodium serotinum.
    Result of PCA plot correlation in Coix lacryma-jobi var. mayuen fields. PANDI: Panicum dichotomiflorm, SIEPU: Siegesbeckia pubescens; OENJA: Oenanthe javanica; IPOHE: Ipomoea hederaceae; COMCO: Commelina communis; LIDPY: Lindernia procumbens; LYCLU: Lycopus lucidus; BIDFR: Bidens frondosa; SETFA: Setaria faberi; STEAQ: Stellaria aquatic; AMBTR: Ambrosia trifida; IPOCC: Ipomoea coccinea; GLYSO: Glycine soja; ERIAN: Erigeron annuus; PERHY: Persicaria hydropiper; EQUAR: Equisetum arvense; CENMI: Centipeda minima; DIGSP: Digitaria ciliaris; CHEAC: Chenopodium album var. centrorubrum; ALOAA: Alopecurus aequalis var. amurensis; ACAAU: Acalypha australis; CAPBP: Capsella bursapastoris; VERAR: Veronica arvensis; POROL: Portulaca oleracea; ECHSP: Echinochloa spp.; SOLNI: Solanum nigrum; CHESE: Chnopodium serotinum.
  • [Table 4.] Occurrence of exotic weed flora ordered by importance value in Coix lacryma-jobi var. mayuen fields(top 10 weeds).
    Occurrence of exotic weed flora ordered by importance value in Coix lacryma-jobi var. mayuen fields(top 10 weeds).
  • [Table 5.] Comparison of Coix lacryma-jobi var. mayuen yield’s between weed management plots and no weeding plots.
    Comparison of Coix lacryma-jobi var. mayuen yield’s between weed management plots and no weeding plots.